Hand brake for spooling machines



Dec, 16 1924.-

s. DANILOFF ET AL HAND BRAKE FOR SPOOLING MACHINES Filed June .33"

Patented Dec. 16, 1924.

UNITED STATES PATENT OFFlCE.

SERGE DANILOFF, 0F LOWELL, AND ROBERT E. NAUMBUEG, OF WINCHESTER, MASSA-CHUSETTS, ASSIGNORS TO SACO-LOWELL SHOPS, OF BOSTON, MASSACHUSETTS, A

CORPORATION OF MASSACHUSETTS.

HAND BRAKE FOR SPOOLING MACHINES.

Application filed June 20, 1922.

T 0 all whom it may concern:

Be it known that we, SERGE DANILOFF and ROBERT E. NAUMBURG, citizens,respectively, of Russia and of the United States, residing,respectively, at Lowell, in the county of Middlesex and State'ofMassachusetts, and at Winchester, in the county of MiddleseX and saidState, have invented a new and useful Improvement in Hand Brakes forSpooling Machines, of which the following is a specification.

This invention relates to brakes for stopping the rotation of individualspools or other thread carriers in spooling or similar machines.

hen a thread breaks or an end runs out in a spooling machine it iscustomary for the machine attendant to stop the rotation of the spool bybearing on the top of it with his left hand. He usually carries aknotter on this hand and while he holds the spool stationary, he finds,with his right hand, the ends to be joined, brings them to the kno-tter,ties or knots them, and then releases the spool. The high speeds atwhich spooling machines are now operated makes it diflicult for theworkman to stop the rotation of a spool in the manner just describedwithout burning his hand. It has been proposed heretofore to obviatethis difficulty by equipping spooling machines with some form of handbrake with which the rotation of any individual spool can be stopped atwill. These brake mechanisms have not gone into use, however, so far aswe have been able to learn, due, apparently, to practical diflicultiesin their design, particularly the fact that they are awkward to operateand expensive to manufacture.

The present invention has for its chief object to devise a brakemechanism for the purpose above described which will be convenient tooperate, can be manufactured economically, and which generally willsatisfy the practical requirements of a mechanism of this character.

The nature of the invention will be readily understood from thefollowing description when read in connection with the accompanyingdrawings, and the novel features will be particularly pointed out in theappended claims.

Referring now to the drawings,

Serial No. 569,666.

Figure 1 is a transverse cross sectional view through the rail andadjacent parts of a spooling machine showing, in side elevation, a brakemechanism constructed in accordance with this invention; and

Fig. 2 is a cross sectional plan View on the line 22, Fig. 1.

In the drawings 2 designates a spool of the common type mounted on aspindle 8 carrying a whorl or pulley 4, the spindle being supported in aspindle base 5. This base is secured in the spindle rail 6 by means of anut 7. The usual tape guard is shown at 8. All these parts areconstructed and arranged in the usual manner. Normally the spool restson the upper surface of the whorl 4 and is rotated rapidly by itscontact with the whorl.

The brake mechanism shown comprises an annular plate 10 which encirclesthe whorl 4 and is supported immediately below the lower end of thespool 2. This plate constitutes the braking element per se, and itsupper face is grooved or recessed to receive a facing 12 of leather,felt, asbestos, or other suitable material. In order to support andguide the plate 10 it is formed at its front and rear edges withU-shaped ears 13 and 14, respectively, in each of which upper and lowerholes are punched to receive guiding fingers 15 and 16, respectively,that project upwardly from the annular base member 17. This member isclamped securely on the upper surface of the rail 6 between the tapeguard 8 and the nut 7.

The brake 10 is operated by means of a lever 18 which is locatedimmediately behind the spool 2 and is fulcrumed on a horizontal rod 19that extends longitudinally of the machine frame parallel to the spindlerail and supports the entire series of brake levers. The lever comprisesa handle 20, projecting up above the top of the spool 2, and a lowerbifurcated or forked section in cluding arms 21 and 22, respectively,which project forward substantially to the axis of the spool andstraddle the whorl 4. The ring 10 has two lateral ears or projections 23and 24 which rest respectively on the arms 21 and 22, the upper edges ofthese arms being rounded, as best shown in Fig. 1, at their points ofcontact with said ears. A clamp 25 secured to the lever 18 by screws,

holds; the lever on the rod 19, the clamp being slotted at its: upperside to receive a bolt or screw 26 which performs the double function ofholding the lever in pro-per alinement with the spool 2, and also oflimit ing the range of the swinging movement of the lever on the rod.

Normally the parts are held by gravity in the positions in which theyare shown in full lines in Fig. 1. When the thread or end on the spool 2breaks, the attendant pushes the handle 20 backwardly, with his lefthand, directly away from the front of the machine, thus causing thearms: 21 and 22 to raise the brake l0 and bring the facing 12 in contactwith the lower end of the spool '2. A continuation of this movementlifts the spool of]? the driving surface of the whorl 4t and thefriction of the spool on the facing 12 stops the spool. This action maybe hastened by the operator pressing lightly on the top of the spoolwith the same hand that operates the brake. It should be noted that thehandle is located so close to the spool that it is entirely convenientfor the work man to bear on the top of the spool at the same time thathe is pushing the handle backwardly. He usually carries a knotter on hisleft hand and, while he continues to hold the lever '20 back, he findsthe broken ends of the thread with his right hand, brings them to thelinotter, knots the ends together, and then releases the handle 20. Theparts immediately return to their full line position, Fig. 1, under theinfluence of gravity, and the spool begins to rotate again.

It will now be appreciated that the invention provides a very simpleform of inclividual brake mechanism for the spools of spooling andsimilar machines. In the arrangement-shown all the parts can be made bythe punch and die process so that the mechanism can be manufactured veryeconomically. The fact that the hand levers 18 may, if desired, beslipped on the end of the rod 19 and moved along to the desiredrelationship to their respective spools is an advantage in assembling.Attention is particularly directed to the fact that the motion requiredto operate the brake is entirely natural and convenient, it being simplya movement directly backward away from the workman. The mounting of thebrake 10 so that it moves in a direction parallel to the axis of thespindle avoids any tendency to bind, and the guiding devices for thispart hold it firmly in its proper position.

While we have herein referred to the brake as adapted particularly foruse on spools and spooling machines, it will be underst'ood that theinvention is also applicable to other forms of thread or yarn packages.It is desired therefore that the tion in mind.

Having thus described our invention, what we desire to claim as new is:I

1. In a spooling machine, the combination of a spindle for supporting aspool, a. brake mounted to engage the lower end of said spool, and meanssupporting -said brake for sliding movement in a direction parallel tothe axis of said s-pindle'into and out of engagement with the spool.

2. In a spooling machine, the combination of a spindle for supporting aspool, a brake including a plate mounted to engage the lower end of saidspool, means for guiding said plate for movement in a path parallel tothe axis of said spindle, and means for raising said plateintoengagement with said spool. v I

In a spooling machine, the combination of a spindle for supporting aspool, a. brake including a plate mounted to engage the lower end ofsaid spool, and means for raising said plate intoengagement with saidspool, said means including a lever mounted for movement toward and fromthe front of the machine.

4. In a spooling machine, the combination of a spindle for supporting aspool, a brake for said spool, and means for operating said brakeincluding a lever fulcrumed behind the spool and arranged to have itsoperative movement in a direction toward and from the front of themachine.

5. In a spooling machine, the combination of a. spindle for si'ipportinaspool, a brake for said spool, and means or operating said brakeincluding a lever having a handle positioned adjacent to the upper endof the spool and movable toward and from the front of the machine,whereby the workman may operate the brake with one hand andsimultaneously bear on the top of the spool with the same hand.

6. In a. spooling machine, the combination of a spindle rail, 21.spindle mounted in said rail, a. W horl rotatable with said spindle,said spindle and whorl being adapted to support a spool, a brake mountedto engage the lower end of said spool, an aminlar base plate secured onsaid rail under said whorl and having upright fingers on which saidbrake is guided for movementparallel to the axis of said spindle, andmeans for operating said brak 7 In a. spooling machine, the combinationof a spindle rail, a spindle mounted in said rail, a. whorl rotatablewith said spindle, said spindle and whorl being adapted to support aspool, a brake mounted to engage the lower end of said spool, and anoperating lever "for said brake fulcrumed back of said spool andcomprising a handle movable toward and from the front of the machine anda forked portion straddling said whorl and engaging said brake.

8. In a spooling machine, the combination of a spindle rail, a spindlemounted in said rail, a whorl rotatable with said spindle, said spindleand whorl being adapted to support a spool, a brake mounted to engagethe lower end of said spool, a rod extending parallel to said rail andlocated back of the spindle, and an operating lever for said brakefulcrumed on said rod.

9. In a spooling machine, the combination of a spindle, a whorlrotatable with 'said spindle, said spindle and whorl being adapted tosupport a spool, a brake mounted to engage the lower end of said spool,a stationary base plate having upright fingers on which said brake isguided for movement in a path parallel to the axis of said spindle, andan operating lever fulcrumed back of the spool and comprising a handlemovable toward and from the front or the machine and a forked portionarranged to engage said brake to operate it.

In testimony whereof we have hereunto signed our names to thisspecification.

SERGE DANILOFF. ROBERT E. NAUMBURG.

